Silicon carbide has high temperature resistance, wear resistance, high hardness and resistance to chemical corrosion whose performance is very good. Therefore, the radiant tube made of silicon carbide generally doesn’t have to worry about in the impact of these aspects, but the hard quality also cannot ensure the damage of the outside world. So Silicon carbide products are loved by all walks of life.
I, Silicon carbide radiation tube performance improvement points
1. Regulate the incineration ratio of coal gas and combustion air, and control the content in the incineration exhaust gas to less than 2%. Due to the effect of oxidation and nitrification caused by excessive oxygen under the maintenance of nitrogen, the radiation tube will be damaged by corrosion.
2, Gas pressure control valve and air pressure control valve action should be sensitive, no lagging, to ensure that the gas pressure and air pressure and to ensure that the incineration thoroughly incinerate safely.
3, During the usage of silicon carbide radiation tube combustion air heat exchanger must not leak, to prevent the air by the exhaust gas fan to be drawn away and affecting the gas and air mixed incineration share.
4. The connecting flange and sealing function of the heat exchanger are good, which cannot allow the outside cold air to enter, and the temperature of the combustion air should be improved as far as possible.
5, if the conditions and funds allow, a large heat exchanger should be installed, the use of exhaust gas waste heat (up to 390℃) outside the plant to preheat the air, the air into the burner radiation tube of the heat exchanger after the second preheat air, and improve the temperature of combustion air.
6. When the temperature of the silicon carbide radiant tube is 400℃ (the temperature of the furnace chamber), it is strictly prohibited to open the furnace cover and disassemble the burner and heat exchanger to prevent the high-temperature radiant tube from shortening and forming cracks when it is exposed to the cold air.

II, Silicon carbide radiation tube purchasing errors
1, Some customer is very concerned about price and ignoring the quality. He directly ask how much the price is, in fact, he does not know much about the radiation tube, for its performance, parameters, etc. Second is the comparison of the price, that the price is low is the hard truth, in fact, a lot of types of products, performance is also different, when the choice to see the actual situation.
2. Customers tend to pay too much attention to power and material and ignore the actual use environment or requirements of products. For example, some customers require too high power, a pursuit of high power, resulting in short service life of the electric heat pipe. In addition to the requirements of the material pipe diameter, some customers think the thick pipe is better, which will actually cause waste, but also increase the procurement cost.